From 9c9c5b041b807ddef7d34d128b15ed10c55e751b Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Sat, 5 Jul 2025 22:21:23 +0200
Subject: [PATCH] compiletest: print slightly more information on fs::write
 failure

---
 src/tools/compiletest/src/runtest.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index f8bf4ee3022e1..a03dd23b56bf3 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -1918,7 +1918,8 @@ impl<'test> TestCx<'test> {
 
     fn dump_output_file(&self, out: &str, extension: &str) {
         let outfile = self.make_out_name(extension);
-        fs::write(outfile.as_std_path(), out).unwrap();
+        fs::write(outfile.as_std_path(), out)
+            .unwrap_or_else(|err| panic!("failed to write {outfile}: {err:?}"));
     }
 
     /// Creates a filename for output with the given extension.